The New London Mine is a chromium mine located in San Luis Obispo county, California at an elevation of 1,060 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 1,060 Feet (323 Meters)
Commodity: Chromium
Lat, Long: 35.35333, -120.68861
Map: View on Google Maps
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MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
New London Mine MRDS details
Site Name
Primary: New London Mine
Commodity
Primary: Chromium
Location
State: California
County: San Luis Obispo
Land Status
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Type: Surface
Ownership
Owner Name: H. J. Stevens
Owner Name: Purdy, Evelyn (Mineral Rights)
Home Office: 635 Riverside Ave., Santa Cruz, Ca. 95060
Production
Year: 1953
Material type: CON
Description: Ap_Grade: ^Avg. 44.10% Cr2o3
Year: 1943
Material type: ORE
Description: Ap_Grade: ^Avg. 41.59% Cr2o3
Year: 1918
Time Period: 1916-1918
Material type: ORE
Description: Cp_Grade: ^Avg. 44.23% Cr2o3
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1882
Year Last Production: 1957
Discovery Year: 1885
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Coast Ranges
Physiographic Detail: Santa Lucia Range
Mineral Deposit Model
Not available
Orebody
Form: LENSE
Form: LENSE
Structure
Type: L
Description: Synclinally Folded Members Of Monterey Fm. Under Landslide Block.
Alterations
Alteration Type: L
Alteration Text: Serpentinization Of Saxonite, Dunite, Minor Pyroxenite
Rocks
Name: Dunite
Role: Associated
Age Type: Host Rock Unit
Age Young: Miocene
Analytical Data
Analytical Data: AVG. GRADE OF CONCENTRATS SHIPPED DURING 1950'S: 44.23% CR2O3, 11.86% FE, CR TO FE RATIO 2.55.
Materials
Ore: Chromite
Comments
Comment (Reserve-Resource): CDMG MINERAL PROP. REPORT, UNPUBLISHED.
Comment (Commodity): LUMP ORE SHIPPED DURING 1950'S: 43.52% CR2O3, 10.77% FE, CR TO FE RATIO 2.70.
Comment (Deposit): ORE BODIES OCCURRED IN ZONE WITH APPROX. STRIKE OF N 65-75 W AND DIP OF 40 N. ORE OCCURRED IN 2 FORMS: LAYERED, DISSEMINATED ORE, WITH LAYERS 2.5 CM THICK OR MORE AND MASSIVE ORE.
Comment (Workings): PRE 1950'S WORKINGS WERE UNDERGROUND. OPEN PIT MINE DEVELOPED IN 1950.
Comment (Location): MINE LOCATED ON WEST SIDE OF A STEEP GULLEY FORMED BY WEST BRANCH OF CHORRO CREEK. ; INFO FROM LAND.ST :(1976)
Comment (Deposit): Discovery Year: 1880'S
Comment (Geology): CHROMITE DEPOSIT LIES ON SOUTHERN MOST EXTENT OF SERIES OF MASSIVE LANDSLIDES OCCURING IN SOUTHERN SANTA LUCIA RANGE.
References
Reference (Deposit): STINSON, M.C., 1975, CDMG MINERAL PROPERTY REPORT, UNPUBLISHED
Reference (Production): STINSON, 1975
California Gold
"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.
